Ian Blackford has accused Alex Salmond of trying to "stir the pot" in the SNP leadership contest.
The former First Minister said yesterday that Humza Yousaf, one of three candidates aiming to replace Nicola Sturgeon, had skipped a 2014 vote at Holyrood on same-sex marriage due to "religious pressure".
The social views of the next SNP leader have become a key talking point after Kate Forbes said she would have voted against the legislation if she had been an MSP at the time.